Overflow valve

Abstract

The utility model provides an overflow valve which comprises a valve body and a pilot valve assembly, a valve cavity allowing a valve element to reciprocate is formed in the valve body, and the valve element reciprocates to achieve different opening degrees. The pilot valve assembly is connected with the valve body, the pilot valve comprises a pilot valve body, an energy accumulator, a first pressure regulating part and a second pressure regulating part, a pressure regulating cavity is formed in the pilot valve body and communicates with the valve cavity, and a mounting part is formed at the end of the pilot valve body and communicates with fluid in the pressure regulating cavity; an energy storage cavity is formed in the energy accumulator and is in fluid communication with the pressure regulating cavity; the first pressure regulating part is connected with the pilot valve body through a first connecting piece, and the second pressure regulating part is connected with the pilot valve body through a second connecting piece; by arranging the connecting piece between the pressure regulating part and the pilot valve body, direct connection between the pressure regulating part and the pilot valve body is avoided, the thread gluing problem generated in the pressure regulating process is solved, the risks of thread gluing and scrapping are reduced, the reuse rate of parts is increased, and the economical efficiency of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic component technology, and more specifically, to an overflow valve. Background Technology

[0002] Overflow valves are common pressure regulating devices in hydraulic systems and are widely used in mine spray dust suppression systems. They are typically used for pressure regulation of high-pressure water spray for dust suppression in general working faces.

[0003] The inlet and outlet flanges, pilot valve, bolt plugs, and accumulator of a relief valve typically use threaded connections. To ensure reliable connections, threaded connections require a certain torque. However, excessive torque during installation or repeated disassembly and reassembly can lead to sticking. To prevent sticking, relief valve connections and bolts often use different metal materials and have increased joint hardness. However, using different metal materials and increasing joint hardness significantly increases material costs and does not effectively prevent sticking. Once sticking occurs, the entire component, such as the valve body, needs to be replaced, increasing maintenance costs.

[0004] Therefore, existing technologies have technical problems such as the overflow valve being prone to sticking during use and high maintenance costs. Utility Model Content

[0005] The main purpose of this utility model is to provide an overflow valve to solve the technical problems of overflow valves in the prior art, such as easy sticking and high maintenance costs during use.

[0006] To achieve the above objectives, this utility model provides an overflow valve, comprising:

[0007] The valve body has a valve cavity for the reciprocating movement of a valve core, the reciprocating movement of the valve core to achieve different opening degrees;

[0008] A pilot valve assembly is connected to the valve body. The pilot valve assembly includes a pilot valve body, an accumulator, a first pressure regulating part, and a second pressure regulating part. A pressure regulating chamber is formed within the pilot valve body and communicates with the valve cavity. A mounting part is formed at the end of the pilot valve body and communicates fluidly with the pressure regulating chamber. An energy storage chamber is provided within the accumulator and communicates fluidly with the pressure regulating chamber. The first pressure regulating part is connected to the pilot valve body via a first connector, and the second pressure regulating part is connected to the pilot valve body via a second connector. The first and second pressure regulating parts are respectively connected to the pressure regulating chamber via a first pipeline and a second pipeline, for changing the pressure inside the pressure regulating chamber.

[0009] Furthermore, the first connector is a first threaded sleeve, and the second connector is a second threaded sleeve.

[0010] Furthermore, the mounting part includes a first mounting part and a second mounting part. The first mounting part is connected to the pressure regulating chamber through a first pipeline, and the second mounting part is connected to the pressure regulating chamber through a second pipeline. The first pressure regulating part is a first pressure regulating plug, and the second pressure regulating part is a second pressure regulating plug. The first pressure regulating plug is connected to the first mounting part through a first screw sleeve, and the second pressure regulating plug is connected to the second mounting part through a second screw sleeve.

[0011] Furthermore, the valve body is provided with a pilot valve mounting hole for fixing to the pilot valve body, and a third threaded sleeve is provided at the pilot valve mounting hole.

[0012] Furthermore, the valve body is provided with an inlet port communicating with the inlet pipe, and the valve body is provided with an inlet pipe mounting hole, in which a fourth threaded sleeve is screwed.

[0013] Furthermore, the valve body is provided with a return port communicating with the return pipe, and the valve body is provided with a return pipe mounting hole, in which a fifth threaded sleeve is screwed.

[0014] Furthermore, the accumulator is threadedly connected to the pilot valve body.

[0015] Furthermore, an accumulator mounting hole is provided on one side of the pilot valve body, and a sixth threaded sleeve is provided in the accumulator mounting hole, and the accumulator is connected to the sixth threaded sleeve.

[0016] Furthermore, the first mounting part is connected to the liquid inlet channel via a third pipeline, and the connection or disconnection between the third pipeline and the first pipeline can be achieved by controlling the first pressure regulating screw plug; the second mounting part is connected to the liquid return channel via a fourth pipeline, and the connection or disconnection between the second pipeline and the fourth pipeline can be achieved by controlling the second pressure regulating screw plug.

[0017] Furthermore, the valve body is provided with four pilot valve mounting holes.

[0018] The overflow valve provided by this utility model has a valve cavity within the valve body for the reciprocating movement of the valve core, which achieves different opening degrees. A pilot valve assembly is connected to the valve body, comprising a pilot valve body, an accumulator, a first pressure regulating part, and a second pressure regulating part. The pilot valve body has a pressure regulating cavity that communicates with the valve cavity. An installation part is formed at the end of the pilot valve body, and the installation part is fluidly connected to the pressure regulating cavity. The accumulator has an energy storage cavity that is fluidly connected to the pressure regulating cavity. The first pressure regulating part is connected to the pilot valve body via a first connector, and the second pressure regulating part is connected to the pilot valve body via a second connector. By providing a connector between the pressure regulating part and the pilot valve body, direct connection between the pressure regulating part and the pilot valve body is avoided, thus solving the problem of thread sticking during repeated pressure regulation, reducing the risk of thread sticking and scrap, improving the reusability of parts, and enhancing the economic efficiency of the product. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the overflow valve provided by this utility model is shown;

[0021] Figure 2 A cross-sectional view of the pilot valve body provided by this utility model is shown;

[0022] Figure 3 A schematic diagram of the structure of the first threaded sleeve of the overflow valve of this utility model is shown;

[0023] Figure 4 The installation structure diagram of the valve body and pilot valve body provided by this utility model is shown;

[0024] Figure 5 This invention provides a schematic diagram of the structure of the valve body on the inlet side.

[0025] Figure 6 A schematic diagram of the return port side of the valve body provided by this utility model is shown.

[0026] The above figures include the following reference numerals:

[0027] 10. Valve body; 11. Third threaded sleeve; 12. Fourth threaded sleeve; 13. Fifth threaded sleeve; 20. Pilot valve assembly; 21. Pilot valve body; 22. Accumulator; 23. First pressure regulating part; 24. Second pressure regulating part; 25. First connecting piece; 26. Second connecting piece; 27. Sixth threaded sleeve. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] In order to solve the technical problems of overflow valves in the prior art, such as easy sticking and high maintenance costs during use, this utility model provides an overflow valve.

[0032] Figure 1 A schematic diagram of the structure of the overflow valve provided by this utility model is shown, as follows: Figure 1 As shown, the overflow valve provided by this utility model includes a valve body 10 and a pilot valve assembly 20.

[0033] The valve body 10 has a valve chamber for the reciprocating movement of a valve core, which achieves different opening degrees to reach different pressures. The pilot valve assembly 20 is connected to the valve body 10 and includes a pilot valve body 21, an accumulator 22, a first pressure regulating part 23, and a second pressure regulating part 24. The pilot valve body 21 has a pressure regulating chamber that communicates with the valve chamber, allowing the movement of the valve core to be controlled by adjusting the pressure in the pressure regulating chamber. The end of the pilot valve body 21 has a mounting part that is fluidly connected to the pressure regulating chamber. The accumulator 22 has an energy storage chamber that is fluidly connected to the pressure regulating chamber, allowing the pressure in the energy storage chamber to be transmitted to the pressure regulating chamber. This allows the pressure in the pressure regulating chamber to be adjusted by controlling the connection or closure between the energy storage chamber and the pressure regulating chamber.

[0034] Figure 2 A cross-sectional view of the pilot valve body 21 provided by this utility model is shown, as follows: Figure 2As shown, the first pressure regulating part 23 is connected to the pilot valve body 21 through the first connector 25, and the second pressure regulating part 24 is connected to the pilot valve body 21 through the second connector 26. The first pressure regulating part 23 and the second pressure regulating part 24 are respectively connected to the pressure regulating chamber through the first pipeline and the second pipeline, and are used to change the pressure inside the pressure regulating chamber. By setting a connector between the pressure regulating part and the pilot valve body 21, the direct connection between the pressure regulating part and the pilot valve body 21 can be effectively avoided, thereby solving the problem of thread sticking during repeated pressure adjustment, reducing the risk of thread sticking and scrap, and improving the reuse rate of parts and the economy of the product.

[0035] Furthermore, such as Figure 3 As shown, the first connector 25 is a first threaded sleeve, and the second connector 26 is a second threaded sleeve. The first threaded sleeve and the second threaded sleeve are preferably wire threaded sleeves. The use of standardized wire threaded sleeves facilitates the replacement of parts during product use and can effectively improve the versatility of product parts.

[0036] Specifically, the mounting part includes a first mounting part and a second mounting part. The first mounting part is connected to the pressure regulating chamber through a first pipeline, and the second mounting part is connected to the pressure regulating chamber through a second pipeline. The first pressure regulating part 23 is a first pressure regulating plug, and the second pressure regulating part 24 is a second pressure regulating plug. The first pressure regulating plug is connected to the first mounting part through a first screw sleeve, and the second pressure regulating plug is connected to the second mounting part through a second screw sleeve.

[0037] In practical applications, the first and second mounting portions are provided with internal threads, and the first and second threaded sleeves are provided with external threads. The length of the first threaded sleeve is less than the length of the first mounting portion, and the length of the second threaded sleeve is less than the length of the second mounting portion. The first threaded sleeve has an internal thread that matches the first pressure-adjusting plug, and the second threaded sleeve has an internal thread that matches the second pressure-adjusting plug. Before installing the first and second pressure-adjusting plugs, the first threaded sleeve is threaded to the first mounting portion, and the second threaded sleeve is threaded to the second mounting portion. After installing the first and second threaded sleeves, the first pressure-adjusting plug is threaded to the first threaded sleeve, and the second pressure-adjusting plug is threaded to the second threaded sleeve. This configuration ensures that during use, the first and second pressure-adjusting plugs only move with the first and second threaded sleeves during pressure adjustment; there is no relative movement between the first threaded sleeve and the first mounting portion, or between the second threaded sleeve and the second mounting portion. This effectively avoids the sticking problem that may be caused by repeated relative movement.

[0038] In another embodiment of this utility model, the overflow valve further includes a first limiting part and a second limiting part, which are respectively located outside the first threaded sleeve and the second threaded sleeve. When the first threaded sleeve is screwed onto the first mounting part, the first limiting part abuts against the outer surface of the valve body 10. Correspondingly, when the second threaded sleeve is screwed onto the second mounting part, the second limiting part abuts against the outer surface of the valve body 10. Preferably, the first limiting part and the second limiting part can be, for example, anti-loosening nuts. This mechanical arrangement is beneficial for limiting the first threaded sleeve and the second threaded sleeve, and can further improve the stability of the overflow valve operation.

[0039] Figure 4 This invention provides an installation structure diagram of the valve body 10 and the pilot valve body 21. Figure 4 As shown, the valve body 10 is provided with a pilot valve mounting hole for fixing to the pilot valve body 21, and a third threaded sleeve 11 is provided at the pilot valve mounting hole; preferably, the depth of the pilot valve mounting hole is greater than or equal to the length of the third threaded sleeve 11. To ensure the stability and airtightness of the pilot valve body 21 installation, the valve body 10 is provided with four pilot valve mounting holes; the pilot valve body 21 is provided with a through hole, and the bolt passes through the through hole and is screwed into the third threaded sleeve 11 in the pilot valve mounting hole, thereby realizing the fixed connection between the pilot valve body 21 and the valve body 10. This setting can effectively avoid pilot valve failure caused by sticking.

[0040] Figure 5 A schematic diagram of the structure of the valve body 10 provided by this utility model on the inlet side is shown, as follows. Figure 5 As shown, the valve body 10 is provided with an inlet port that communicates with the inlet pipe. The inlet pipe is connected to the valve body 10 through an inlet pipe mounting flange. The valve body 10 is provided with an inlet pipe mounting hole. A fourth threaded sleeve 12 is screwed into the inlet pipe mounting hole. The inlet pipe mounting flange is provided with a through hole. After passing through the through hole, the bolt or screw and other fasteners are threadedly connected to the fourth threaded sleeve 12 to achieve a fixed connection between the inlet pipe mounting flange and the valve body 10.

[0041] In one specific embodiment, four inlet pipe mounting holes are provided around the liquid inlet, and a fourth threaded sleeve 12 is screwed into each of the four inlet pipe mounting holes. The inlet pipe mounting flange is provided with a through hole, and a bolt or screw or other fastener passes through the through hole and is threadedly connected to the fourth threaded sleeve 12 to achieve a fixed connection between the inlet pipe mounting flange and the valve body 10.

[0042] Figure 6 A schematic diagram of the structure of the return port side of the valve body 10 provided by this utility model is shown, as follows: Figure 6As shown, the valve body 10 is provided with a return port communicating with the return pipe. The return pipe is connected to the valve body 10 through a return pipe mounting flange. The valve body 10 is provided with a return pipe mounting hole. A fifth threaded sleeve 13 is screwed into the return pipe mounting hole. The return pipe mounting flange is provided with a through hole. After passing through the through hole, the bolt or screw and other fasteners are threadedly connected to the fifth threaded sleeve 13 to achieve a fixed connection between the return pipe mounting flange and the valve body 10.

[0043] In one specific embodiment, four return pipe mounting holes are provided around the return port, and a fifth threaded sleeve 13 is screwed into each of the four return pipe mounting holes. The return pipe mounting flange is provided with a through hole, and a bolt or screw or other fastener passes through the through hole and is threaded to the fifth threaded sleeve 13 to achieve a fixed connection between the return pipe mounting flange and the valve body 10.

[0044] To facilitate the assembly between the accumulator 22 and the pilot valve body 21, the accumulator 22 is threadedly connected to the pilot valve body 21; preferably, the accumulator 22 is threadedly connected to the pilot valve body 21 at the pressure regulating chamber, which facilitates fluid communication between the accumulator chamber and the pressure regulating chamber.

[0045] Furthermore, an accumulator mounting hole is provided on one side of the pilot valve body 21, and a sixth threaded sleeve 27 is provided in the accumulator mounting hole. The accumulator 22 is threadedly connected to the sixth threaded sleeve 27. Preferably, the accumulator mounting hole is connected to the pressure regulating chamber.

[0046] In order to regulate the pressure in the pressure regulating chamber, the first mounting part is connected to the liquid inlet channel through the third pipeline, and the connection or disconnection of the third pipeline and the first pipeline can be achieved by controlling the first pressure regulating screw plug; the second mounting part is connected to the liquid return channel through the fourth pipeline, and the connection or disconnection of the second pipeline and the fourth pipeline can be achieved by controlling the second pressure regulating screw plug.

[0047] The overflow valve provided by this utility model effectively avoids direct connection between components by setting a first threaded sleeve between the first pressure regulating plug and the pilot valve body, a second threaded sleeve between the second pressure regulating plug and the pilot valve body, a third threaded sleeve between the pilot valve body and the pilot valve mounting hole, a fourth threaded sleeve in the inlet pipe mounting hole, a fifth threaded sleeve in the return pipe mounting hole, and a sixth threaded sleeve in the accumulator mounting hole. This solves the problem of thread sticking during repeated pressure adjustment, reduces the risk of thread sticking and scrap, and improves the reuse rate of parts and the economy of the product.

[0048] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0049] 1. Effectively solves the technical problems of overflow valves easily sticking together and high maintenance costs during use;

[0050] 2. The structure is simple and easy to assemble, which reduces processing and manufacturing costs and improves the economic efficiency of the product.

[0051] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A relief valve characterized by, include: The valve body (10) has a valve cavity for the valve core to reciprocate, the valve core reciprocating to achieve different opening degrees; A pilot valve assembly (20) is connected to the valve body (10). The pilot valve assembly includes a pilot valve body (21), an accumulator (22), a first pressure regulating part (23), and a second pressure regulating part (24). A pressure regulating chamber is formed inside the pilot valve body (21), and the pressure regulating chamber is connected to the valve chamber. An installation part is formed at the end of the pilot valve body (21), and the installation part is fluidly connected to the pressure regulating chamber. An energy storage chamber is provided inside the accumulator, and the energy storage chamber is fluidly connected to the pressure regulating chamber. The first pressure regulating part (23) is connected to the pilot valve body (21) through a first connector (25). The second pressure regulating part (24) is connected to the pilot valve body (21) through a second connector (26). The first pressure regulating part (23) and the second pressure regulating part (24) are respectively connected to the pressure regulating chamber through a first pipeline and a second pipeline, and are used to change the pressure inside the pressure regulating chamber.

2. The overflow valve of claim 1, wherein The first connector (25) is a first threaded sleeve, and the second connector (26) is a second threaded sleeve.

3. The overflow valve of claim 2, wherein The mounting part includes a first mounting part and a second mounting part. The first mounting part is connected to the pressure regulating chamber through a first pipeline, and the second mounting part is connected to the pressure regulating chamber through a second pipeline. The first pressure regulating part (23) is a first pressure regulating plug, and the second pressure regulating part (24) is a second pressure regulating plug. The first pressure regulating plug is connected to the first mounting part through a first screw sleeve, and the second pressure regulating plug is connected to the second mounting part through a second screw sleeve.

4. The relief valve according to any one of claims 1 to 3, characterized in that The valve body (10) is provided with a pilot valve mounting hole for fixing to the pilot valve body (21), and a third threaded sleeve (11) is provided at the pilot valve mounting hole.

5. The overflow valve according to any one of claims 1 to 3, characterized in that The valve body (10) is provided with an inlet port that communicates with the inlet pipe, and the valve body (10) is provided with an inlet pipe mounting hole, and a fourth screw sleeve (12) is screwed into the inlet pipe mounting hole.

6. The overflow valve according to any one of claims 1 to 3, characterized in that The valve body (10) is provided with a return port that communicates with the return pipe, and the valve body (10) is provided with a return pipe mounting hole, and a fifth threaded sleeve (13) is screwed into the return pipe mounting hole.

7. The relief valve according to any one of claims 1 to 3, characterized in that The accumulator (22) is threadedly connected to the pilot valve body (21).

8. The overflow valve of claim 7, wherein The pilot valve body (21) has an accumulator mounting hole on one side, and a sixth screw sleeve (27) is installed in the accumulator mounting hole. The accumulator (22) is connected to the sixth screw sleeve (27).

9. The overflow valve of claim 3, wherein The first mounting part is connected to the liquid inlet channel through a third pipeline, and the connection or disconnection between the third pipeline and the first pipeline can be achieved by controlling the first pressure regulating screw plug; the second mounting part is connected to the liquid return channel through a fourth pipeline, and the connection or disconnection between the second pipeline and the fourth pipeline can be achieved by controlling the second pressure regulating screw plug.

10. The relief valve of claim 4, wherein The valve body (10) is provided with four pilot valve mounting holes.

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